Oil burner boiler



June 16, 1931. *n D, C, WOODWARD 1,809,920

` OIL BURNER BOILER Filed July 23. 192s 4 sheets-sheet 1 :zlillllml E W Mmm' 'June' 16, 1931. D, Q WOOWARD 1,809,920

OIL BURNER BOILER Filed July 23. 1928 4 Sheets-Sheet 2 June 16, 1931.

D. c. wooDwAr-:Dl 1,809,920

OIL BURNER BOILER Filed July 2s. 192e 4 sheets-Sheet 5 June 16, 1931. l D Q WOODWARD 1,809,920

OIL BURNER BOILER Filed July 25, 192s 4 sheets-sheet 4 T320 1 represents 'the boiler W Patented June f., 6, 931

.- D'AVLMIEYLQC.Y .uiooDWARirbr LWELLQMASSCHUSETTS Applicabionid :muy 23,

' The inyention can best be seen sindunder-1` boiler."` A l y Fig. 2 is a sectonouthe line y242 of liig.k 1.- Fi'g. 3 is a seotionfon the lineB-Soi Fig. :1L zFig.: 4 is a of the combination oil-and :f1-5 air .fdisharge mechenisrnf including jan oil pump:indiaV fari or blower,V and c Referring i' z5 inount'edc with' i a, water-,containing head or dome 3.V V74C is `'the ,combustion"chamberiwhich uis located between `ythe head orV dome. andthe top section* of the boiler, these parts. 'forming' l practically@ Wetefiackt awendth @Hilfe iii- '.cenibustionfehenibl eceptffran opeinig'r' into-the oombustioiijohamberin thesideof the j A. Y p y Y y tubular fixture '-jwlll be dlrected to pass boiler and vwhich fopeningls normafllyfC-,IQSG :by ,door 6,.V l The Vyv:itefr-eonteining yii'iteriors of thedome fi-,ndy Wftersectionsitre Connected,-

i inany suitable rhaniier. Water isintroduced byWay of kan opening 7 into the b'ottoinrwater section; `VBelow its bottonrwaterzsectioii boiler -is provided with: angairfsectiori 8 with i, :40 n an openinggthroughit for thepessage or lhot f gasescasfthrough Jthe Waterf'sectlons Ain-1s introducedto pass*throughthisse'QtilV to be,

heated by the -hot gases and afterward passed to` the :burner as willllpre'sentlyibe explained. Belowlits air-section 8 the boiler yisproyided at its extreme bottom4 with a flue chamber: 9.I

l-Iziyi-nigfrv 'outletV connection. with thisfohzimber;

is alue l0.'` Thislue extends upward by the i side-of the'b'oilerV to fa point substantiallyeyen with the combustion h'amber.andcommui- Figure l is a, cross vertiol'fseotion'foffthe 1923,! serialfNo.' 294,673.51. n Y n A oatesyyith' a, sm'o'liepipe 1.11 leadingfto the Chlmneyuif L* K Y "The burner ispreferably located inthe' combustion-chamberresting on the topinostr one ofthe Watersectoris. 15 y represents the 575 Y upright tubular body "of, the burner provided V'ysitliflegs 516 by which ity isl supported ,to rest lon thetopmost one 4of f the Water sections as eforesai'ch Thebody'l" is provided WithiJ closed'bottom'plate 17 which forms the bot- 60 toni'of the bu'rrierir Y 18 represents the head of Vthe burner inside largerthan the-bodyfaud provided Witlra pluralityoi slits or openings 1.9.inthfe sideQ-lthereof The headis secured to the bodypbyzi botto'rnconn'eoting plate 20. 65 Y Thehead ris, proyidedelsowith a top platef21 which forms the .top oftheburner.A This pleite Y 2l-is spaoedroinitheftop,edge ofthe' body 4'ofthe burner lsosto leave u clearance over'y the top'. edge ofthe body leadingtothe slits'm inxfthe side'of A"lleicll f'i Located @Within thelv body f of the burneris tiibii-lzir-fix`tiire 22.*The opposite"endsoffthis flXture are yboth opendarespeced respectively roinf the top `and bottoni oftheburnerf". The tubular iiture carried,by` an annular, rib-formirig plate 23interposed ybetween it and the side v'ofthe burnerbody.l This `plate 23 olo'sesthe pess'ge bet'yveeitheburnerbodyjand'the sidev niet@ tubui'arx'mre 22 @that au mimoso duced into' the'bottom of the burner belowthe 1 through thisxture. Carriedby the top plate 21; of thebirner lare'baiile fplayt/es of which 24' is oneex'tending down intotliespacebetween 8.5

theYV body o the burner andthe ltubular, fix'- -turegvithihfit above the connecting pletek 23; f vAnother baiiie'plate25 extends ,down from the Vvto1'ffplate721,ofthe burner `yi'fithl Jche head thereofto liebetweeiithe Vtopfexterior side vlof the burnerbodyandfthe'side of the head KWell jaboyefthe 'plate *201Wh`ich connects'y the headfto the body." With theftubular firture fand 'baille platesthus farrangedf inside the chmber ofthe burnerfbody andhead5` which 95 .chmbe'rform's 1a iniiiing chamberV leading to fthef'slits' 'inthesidefof thefhead, all intro'. `d'ue'gi'ad into .thyburner' y'1 -ridpassing through lthetubul'r'iixture will pass doyvnbeneath the t15emepleteeigehenceupwardvertheeopief 100 i Y' the burner body, forming a baille plate, thence down around the baille plate 25 and thence outward to and through the slits 19 in the side of the head. The arrangement is such that only highly heated air will be introduced into the burner to pass through the tubular fixture and by the baflies as aforesaid. The air is initially introduced by means of a fan blower 30 arranged in a fan case 31 which connects with the bottom air section 8 of the boiler through a connecting pipe or conduit 32. Air thus introduced will become heated by the hot gases passing around the air section 8 through which the air is directed to pass. After pass-r ing through the air section 8 the air is directed to pass through a pipe 33 connecting with the air section 8 of the boiler and extending up through the flue 10 so that air passing through the pipe 33 will be subjected to the heat from the hot flue gases in the lue 10. From ,the upper end of the flue the pipe 33 is continued by a pipe 34 which connects with the burner body in such place and manner asto direct the entering air into the bottom of the burner beneath its inside tubular fixture 22.

Reference will now be made to the manner in which gaseous fuel highly heated will be introduced to mix with the heated air passing through the burner and combining therewith to `form a combustible mixture: Arranged above the burner and' connected to the top plate thereofr is a gasifier tube 35. Oil is introduced into this tube by a pipe 36 passing through the door of the combustion chamber. Flow of oil is induced by a pump 37 later to be referred to, and to` which oil isled by way of a pipe 38. Connecting with the gasitier tube through the top platek21 of the burner is a tube 39. The oil as a gas passes from the gasifier tube into the tube 39, entrance being had through a nozzle plug 40 arranged in the top end ofthe tube 39. The tube 39 has openings 41 in it at its top and also openings 42 at its bottom. As the gas is kpassing down through kthe tube 39 at high velocity some of the heated air passing through the burner will bedrawn through the openings 41 into the tube tomingle with the gas. The mingled gas and air will escape from the tube 39 by way of the openings 42" at ythe bottom into the mixing chamber of the burner to there mingle withthe air passing through it as previously ex lained, the baie plates then operating to `orm a very intimate mixture between the air and gas before passage of the mixture through the "slits in the-burner head. The llame is formed larger diametrically than the burner headV so that it will lit over and around the head and be in close proximity to the ame issuing from it.

As previously explained, airis supplied to rect proportion, maintaining the proper condition forcomplete combustion without excess air. To this end the fan and pump are operated by a driving shaft 45 common to both. VThe fan is mounted directly u n this shaft while the pump is driven by t e shaft 45 through a worm and gear connection 46 and 47, respectively,the worm being fixed to the shaft 45 and the gear being fixed to a shaft 48 which operates the pump. The shaft 45 is driven by means of a motor 50. This motor may be a constant-speed motor or one of the variable or adjustable-speed type. In any event I prefer as shown that the motor drive the shaft 45 through a chain of gears capable of imparting diferent speeds to the shaft. The gears are arranged within a common gear box or casing 51 through which the shaft 45 extends and on the sides of which it is journaled to turn. 52 is the shaft driven by the motor which also extends through the gear box and is journaled to turn on the sides thereof.V Uponfthe shaft 45 inside the gear box are gears 53 and 54, respectively. Each of these gears is borne by a sleeve 55 loose on the shaft 45. The gear 53 is a relatively small gear diametrically'while the gear 54 is one of much larger diameter. Inter osed between the gears53 and 54 is a clutch'- orming member Y,56 splinedto the shaft 45 and making clutch forming engagement with either one or the other ofthe gears53 or 54 as the clutch member is moved to the right or left along theshaft 45. v:The clutch member is thus moved bymeansof a hand lever 57 pivotallymounted on the casing. In engagement with the gears 53 and 54, respectively, are gears 58 and 59 both fixed to a common shaft 60 j ourn'aledltoturn on the sides of the casing. The gear 58 is a gear of relatively large diameter and the gear 59 one of relatively small diameter. -In engagement with the gear 58 is a. relatively small gear 61V fixed to the motor lshaft 52. @Withthe differential gearing thus provided the motor operating at constant speed will impart a relatively rapid rotation to the shaft 45'whenthe movement of the clutch causes the gear 53 tobe locked to this'shat. In such case both the fan andpum will be driven at a relatively high spec i Conversely the shaft 45 will be driven ata much slower speed and accordingly the fanand pump more 'slowly operated when l from the bottom of theboilervupward'to the ytheclutch ismoved ',tolock theqgearl to the shaft Thearrangementis-one ofl simple differential gearingand, as said gbefore,

and pump.

it may be entirely eliminatedand dependence -placed only upon avariable-speed motor for the vvShaft 45 which V,drives fthe-` fan operating In, connection with operation ofw'the boile ritgwillbev observed that both the eiland air are highly heatedy before they are brought together within the ,burnerl to forma combusformed by the passage of the oil through the gasiier tube 35 arranged within the combustion chamber in close proximity to the'burner, while the air is heated by the passage thereofy through the air section 8 ofthe boiler through which'the flue gases are passedand also by passage through the pipe 33 arranged within the flue l0 through which the gases are ydirected to escape Y to the chimney. The arf rangement is alsosuch thatV proper propor- V tions of air and gas will bedirectedjto the will be downward through the water sections J of theboiler and accordingly will be opposite* burner atalltimes to forma proper combustible mixture,-andthe combined airand vgas are intimately mixed Within the burnerbefore ignition. The combustion chamber containing the burner, located as it is between the top of the water jacket of the boiler and the aircontaining drum or head, occupies an advan-l n tageous position in that the ame from the burner willbe inpractically intimate contact with a relatively large water-containing sur-- face, the 'combustionchamber being, as said before, practically vwater-jacketed exceptf'at the point of its Vdoor yor entrance. The flow'.

of hot gases out of the combustion Vchamber the direction 0f fiowof the'Water' which'is top. As Vthe hotY gases pass "downward through the boiler the first contact willwbe with the top water jacket where the water is `hottest,'the gases then passing downward'` throughthe cooler sections gradually givingAk up its heat until it passes into lthe -flue. AIn

can be reduced to a minimum and the of the United States f l. Anfoil burnerboiler comprisinganum-f ber of superposed waterysections having openings through them 'for the passage of hot gases, a water-containing dome surmounting.-

the upper one of the water sections and ccoperating therewithto form a combustionV chamberbetween them, a burner for heating the dome from within the combustion chamber, means for supplyingL fuelto theburner, means for supplying heated air to the burner to mingle with the fuel including an'air: sec"- tion associated withthe wate'rsections with bustion heatedthereby Vand thelCe passedrto th'ef burner yto ymingle with 'the hot gaseous Vfuel Y 4. ,An 'oil 'burner boiler opening vthrough it for the rpassage'of 4hot vgases and through which air section air sup- .Pldtoj theburner isfpassed, jand a iiue pas- Y sage for ltheescapeof the` gases afterpassag'e ,i 7o section from out of. the combustion chamber.

downward' through thewater sections and air y2....1An-oily burnencomprising a numberof i supplying heated air to ythe burner togmingle Y with #the f fuel 'including an lair section associated with the Water sectionswith opening through it `forthe passage of hot gases, and includingalso al pipeleading fromithe air,-

through which ain section and* pipe air vsupsaid@ ,3. .A [cil vber ofpsuperposed'f water sections having openings throughthem for thepassagel of `vhot gases', -waterrcontaining do-mesur mounting the upper oney ofthe water' sections s;

superposed water sectionshaving -opem'ngs through*them for the passage of hot gases,-a i water-.containing dome4 surmounting v the .up-` 1 per one "of the water sections vand co-'operattible mixture. The oil is heated and:` gas'y 85` section andconnectinggwiththe burner `and plied tothe burner is passed, and a fluejpast sage for; the yescapefof gases after passage downwardland through the ,water sections and ,airsection from outof the 4combustion chamber, saidfpas'sage extendingy in part upwardy v bythelside of the boiler and containing the Vpipe yleliveringair kto the'burner als aforeand cop-operating therewith-toform a com-,g

chamberA between them,an air sectiony associatedwith ythewatersections with open-L "ing, through r`it for. the passagefof vhot; gases, l, rvagfluel passageQfor-the escape of the gases after passage downward 'throughl the water; sec-f, e

tions andair,section-from out/fof theik comfbustion chamber, aburner for heating they domelfrom within/the( combustion chamber, a lgasifierassociated with they burner inside f;

thefcoinbustion chamberrforsupplying a hotV plying oil-tothe ,lgasiier, and means for gaseous .fuel totheburner, means@ for sup`` I passingair through'ijsa'i'd air,y section rtolbe I i supplied by the-gasifier. i f Y comprisinga num- Ikber/off superposedzvwater sections having openingsvv through themy for the passage of? hotf gases,` a water-containing dome sur-k Y mountingzthejupper. one of the water secf f tions and.rco-operatingtherewith toy form a combustion `chamber between them,` a flue ,passage'for theescape offgases afterpassage downward through the -water sections from out ofthe combustion chamber,v a-burnerjfor jagbottom closure, a-,burnerzhead surmounting 'ley muy

the body having a top closure' spaced from l the top edge of said body and a bottom making closure with the sides of said body, said head having, also, openings in' its sides, a central fixture inside the body of the burner open at its opposite ends and which ends are spaced respectively from the bottom closure of said body and top closure of said head,

` means interposed between said body and central fixture for closing the space between them whereby air introduced into the chamber of said body below said central fixture will pass through said fixture, means whereby heated air may be supplied to the chamber of the burner to pass through said central fixture as aforesaid, a gasiiier associated with the burner and heated thereby, a tube extending from the gasifier into said central fixture and provided with openings at its opposite ends, a nozzle plug separating the interior of the gasifier from that of said tube,

' and means whereby oil may be supplied to the gasifier.

5. An oil burner boiler comprising a number of water sections having openings through which hot gases of combustion may be directed to pass downward through said sections, a water containingdome surmounting the upper one of said water sections and cooperating therewith to form a combustion p chamber within the dome opening onto said top one of the water sections whereby hot gases within said chamber will contact with the interior wall of the dome and pass out of said chamber downward through the Vwater sections, said water sections and dome being interconnected whereby water admitted at the bottom of said water sections will pass upward therethrough and into the dome,

a burner arranged whereby heat from the burner will be directed against the wall of said dome from within the combustion cha'mber and the hot gases escape from the combustion chamber to pass. downward through the water sections as aforesaid, a flue for ythe escape of gases after passage through the water sections, and means for supplying a combustible mixture to the burner.

6. An oil burner boiler comprising a number of waterl sections provided with openings through which hot gases of combustion may be directed to pass downward through said sections, a water containingV dome surmounting said water sections and formed to provide a combustion chamber withink it opening onto the top one of said water sec'- z tions whereby hot gases within said chamber will contact with the interior wall ofthe dome and pass out of said chamber downward through the water sections, said water sections and dome being interconnected whereby water admitted at the bottom of said water sections will pass upward through and into the dome, a burner arranged whereby heat from the burner will be directed 

